Picture Index
A pictorial index to species gallery photos. Hover over for species name. Click to see the picture.
Natural variation, environmental influences and whether the lichen is wet or dry make it difficult to place a species within the categories shown below with certainty.
This is especially true for the colour of the apothecium, the colour of the thallus and whether it is fertile or sterile.
These factors need to be taken into account when using this picture index. Please let me know if you find any mistakes.
Shortcuts:-
non-thalline apothecia
lirellae/star-shaped apothecia
perithecia
sterile crusts
stalked and pin lichens
Squamulose lichens
Leafy lichens
Jelly lichens
Bushy lichens
Crustose lichens
Apothecia with a thalline margin.
Apothecia white, cream or pale coloured (& all fertile Pertusaria species)
Apothecia orange
Apothecia red to brown
Apothecia very dark to black
Apothecia without a thalline margin or difficult to decide (may be immersed in thallus).
Apothecia white, cream or pale coloured
Apothecia orange
Apothecia red to brown
Apothecia very dark to black
Apothecia 'Arthonioid'
Apothecia elongated/star-shaped (lirellae).
Perithecia (tiny flask-shaped ascomata).
Sterile crusts - fruiting bodies absent
With isidia (tiny finger-like projections)
With soredia (tiny powdery areas)
Powder lichens (leprose crusts)
With pycnidia, sporodochia or hyphophores (tiny peg-like, dot-like or scale-like structures)
Not as above
Fruiting body stalked or mushroom-like.
Pin lichens (crusts with small pin-head fruits)
Squamulose lichens (small to tiny flakes)
Leafy lichens (foliose)
Green to greenish-brown
Grey, blue-grey to grey-green
Brown
Yellow to Orange
Jelly lichens
Bushy lichens (fruticose)
Cladonia lichens with stalked apothecia (podetia)
Strap-shaped branches
Beard or hair lichens
Other bushy lichens